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Tag: "heartbeat" at biology news

Slowing the racing heart

...ell -- beats faster or slower to induce a rhythmic heartbeat that varies to increase or decrease the blood flow...ker control are common in heart diseases. When the heartbeat becomes non-rhythmic and chaotic, it can result in fatal arrhythmias and stroke," said R. John Solar...

A new study of living cells could revolutionize the way we test drugs

...hat equipment sensitive enough to measure a cell’s heartbeat can be developed. "We already have some ideas about how to improve the sensitivity of the detector in water and next time we will also use a more active micro-organism such as an amoeba. Yeast is a subdued organism and doesn’t generate much activi...

Fast test for low blood flow in dogs detects early heart trouble

...injected with the drug adenosine to speed up their heartbeat and maximize circulation. The dose, they note, was the same as that typically used in humans for routine stress testing: 140 micrograms per kilogram per minute, for five minutes. When forced to pump faster, healthy heart tissue and surrounding b...

Whole-genome study at Johns Hopkins reveals a new gene associated with abnormal heart rhythm

...genetic and environmental, contribute to irregular heartbeat and other conditions that may lead to sudden cardi...e human heart. And the "lub" part of the "lub-dub" heartbeat corresponds to ventricular contraction. So NOS1AP is active in the right place and time to play a ro...

Survival of heart patients on beta-blockers varies greatly with genetic variation

...-blocker drugs block this interaction, slowing the heartbeat and lowering blood pressure to relieve stress on the heart. They also block impulses that can cause rhythm disturbances. "Long-term therapy with beta-blockers is standard care for heart patients," Lanfear says. "Data from patients with acute myocard...

New defibrillator signals doctor of patient's irregular heartbeat or device malfunction

... a significant increase in the number of irregular heartbeat (arrhythmia) episodes, as well as the preferred al...hm if it detects an abnormal heartbeat. Irregular heartbeat (arrhythmia) is a major cause of death following heart attacks. Studies have shown mortality is low...

Implanted Devices Detect High-Risk Heart Failure Patients

... is no cure, drugs can improve the strength of the heartbeat (digoxin), relax blood vessels (ACE inhibitors)or remove the excess buildup of fluid in the lungs (diuretics). Implantable devices are the latest options in preventing arrhythmias that can lead to sudden death, with CRT-Ds being the latest technology...

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